Before assigning student roll numbers, you can set the roll number prefix for a course. The prefix set for a course is then automatically applied to all batches under that course and also applied to all students in each batch. The roll number prefix can contain a maximum of six alphanumeric characters.
At the top of your dashboard, click the module access icon > Administration > Settings > Manage student roll numbers to open the Manage roll number page.
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Click Set roll number prefix beside a course.
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Enter the roll number prefix.
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Click the Save button.
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